netdev - Re: [PATCH v3 1/3] dt-bindings: net: ti: k3-am654-cpsw-nuss: Update bindings for J7200 CPSW5G

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Date:   Thu, 9 Jun 2022 12:26:06 -0600
From:   Rob Herring <robh@...nel.org>
To:     Siddharth Vadapalli <s-vadapalli@...com>
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, krzysztof.kozlowski+dt@...aro.org,
        linux@...linux.org.uk, vladimir.oltean@....com,
        grygorii.strashko@...com, vigneshr@...com, nsekhar@...com,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kishon@...com
Subject: Re: [PATCH v3 1/3] dt-bindings: net: ti: k3-am654-cpsw-nuss: Update
 bindings for J7200 CPSW5G

On Mon, Jun 06, 2022 at 04:34:41PM +0530, Siddharth Vadapalli wrote:
> Update bindings for TI K3 J7200 SoC which contains 5 ports (4 external
> ports) CPSW5G module and add compatible for it.
> 
> Changes made:
>     - Add new compatible ti,j7200-cpswxg-nuss for CPSW5G.
>     - Extend pattern properties for new compatible.
>     - Change maximum number of CPSW ports to 4 for new compatible.
> 
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
> ---
>  .../bindings/net/ti,k3-am654-cpsw-nuss.yaml   | 135 ++++++++++++------
>  1 file changed, 93 insertions(+), 42 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
> index b8281d8be940..49f63aaf5a08 100644
> --- a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
> +++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
> @@ -57,6 +57,7 @@ properties:
>        - ti,am654-cpsw-nuss
>        - ti,j721e-cpsw-nuss
>        - ti,am642-cpsw-nuss
> +      - ti,j7200-cpswxg-nuss
>  
>    reg:
>      maxItems: 1
> @@ -108,48 +109,98 @@ properties:
>          const: 1
>        '#size-cells':
>          const: 0
> -
> -    patternProperties:
> -      port@[1-2]:

Just change this to 'port@[1-4]'.

> -        type: object
> -        description: CPSWxG NUSS external ports
> -
> -        $ref: ethernet-controller.yaml#
> -
> -        properties:
> -          reg:
> -            minimum: 1
> -            maximum: 2

And this to 4.

Then, you just need this to disallow the additional ports:

if:
  not:
    properties:
      compatible:
        contains:
          const: ti,j7200-cpswxg-nuss
then:
  patternProperties:
    '^port@[3-4]$': false


Rob